A Story of Two Substances
Chemistry and Matter
Scientific Methods
Scientific Research/Lab Procedures
Bonus Questions
100
Definition of Chemistry
the study of everything around us
OR
the study of matter and the changes it undergoes
100
Anything that has mass and takes up space.
What is matter?
100
The thing you plan to change in an experiment
and
the thing that changes in response to the first change.
100
The difference between pure and applied research is...
Pure research is done to gain knowledge on a topic applied research is done to solve a problem
100
The layer of Earth's atmosphere where clouds occur, where airplanes fly, where Earth’s weather occurs, and also contains the air we breathe.
What is the Troposphere?
200
The Earth atmosphere layer where the protective ozone layer is located. It contains ozone, a substance made up of oxygen, that absorbs harmful radiation before it reaches the Earth.
What is the Stratosphere?
200
The difference between mass and weight is...
Mass does not change whereas weight can vary depending on where the object is on Earth
200
a factor that is not allowed to change during the experiment
What is a control?
200
Keep food, beverages, and...
personal items, techonology from the laboratory.
200
Increased levels of ultraviolet radiation called UVB can cause... (Hint: 3 examples were provided)
Skin and eye cancer in humans, lower crop yields in agriculture, and disrupt food chains in nature.
300
Chloroflurocarbons is made up of...
What is chlorine, flourine, and carbon?
300
Matter can be broken down into more than hundreds of types of matter called...
What are elements?
300
Scientific method is...
a systematic approach used in scientific study. It is an organized process used by scientists to do research, and it provides method for scientists to verify the work of others.
300
PPE is...
Personal Protective Equipment
300
Thinning of the ozone layer is often called
What is the ozone hole?
400
Chemicals are also known as...
What are substances?
400
Elements are made up of particles called..
What are atoms?
400
Qualitative data describe _________; quantitative data use ________
What are observations and numbers?
400
If your lab procedure instructs you to add three parts acid to each one part of water and you start with 17ml of water, how much acid will you add?
51ml of acid
400
CFCs replaced _____ the coolant used in refrigerators because toxic gases could escape the fridge and harm the members of the household.
What is ammonia?
500
How is the ozone formed?
When oxygen (O₂) is exposed to ultraviolet radiation, ozone (O₃) is formed.
500
_____________ observations of matter reflect the actions of atoms on a ____________ scale
What is Macroscopic and Submicroscopic?
500
The scientific methods follows the following steps:
500
What are three examples of Chemistry happening in the real world?
Frozen water, rusting nail, burning log, etc...
500
Explain the difference between theory and law
Theory: an explanation of a natural phenomenon based on many observations and investigations over time.
Law: a relationship in nature that is supported by many experiments